HOUSE, THE GENUS IPOMCEA 
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158. Ipomcea batatas (L.) Lam. Encyc. 6: 14. 1804.— Willis, Prac. 
FI. 183. 1894. 
Convolvulus batatas L. Sp. PI. 154. 1753. 
Convolvulus edulis Thunb. FI. Jap. 84. 1784. 
Ipomcea catesbatei G. F. W. Mey, Prim. FI. Esseq. 113. 1818. 
Convolvulus esculentus, batata and varius Veil. FI. Flum. 2: 73. 1827. 
Batatas edulis Choisy in Mem. Soc. Phys. Genev. 6: 435. 1845.— In DC. Prodr. 9: 
1845. 
Convolvulus chrysorhizus Forst.; Wien. Illustr. Gartenz. 288. 1888. 
Type locality: Asia, Africa, America (Linn.). 
Distribution : Circumtropical, chiefly as a cultivated plant. Arkansas 
to Texas, Florida and Mexico to South America. Sweet Potato. 
Illustrations : Catesb. Car. pi. 60. Moris. Hist. 2: pi. 3. /. 4- Rumph. 
Amb. pZ. 130. Rheed. Mai. 11: pZ. 50. Dill. Elth. pi. 80. f. 91, 93; pi. 
81, f. 93; pi. 82, f. 94; pi. 83, /. 95, 96. Veil. FI. Flum. 2: pi. 55, 58, 59, 61. 
Apparently derived by cultivation from the next species and doubtfully 
distinct from it. 
159. Ipomcea tiliacea (Willd.) Choisy in DC. Prodr. 9: 375. 1845.— 
Hallier f. Bull. Soc. Bot. Belg. 37: 95. 1898. 
? Convolvulus platanifolius Vahl, Symb. 3: 26. 1794. 
Convolvulus tiliaceus Willd. Enum. 1: 203. 1809.— Schlecht. in Linnaea 6: 739. 
1831. 
Convolvulus fastigiatus Roxb. Hort. Beng. 13. 1814. 
Ipomcea cymosa G. F. W. Mey. Prim. FI. Esseq. 99. 1818. 
? Ipomcea platanifolia Roem. & Schult. Syst. 4: 220. 1819. 
Convolvulus essequebensis Spreng. Syst. 1: 600. 1825. 
Ipomcea fastigiata Sweet, Hort. Brit. 288. 1826. Choisy in DC. Prodr. 9: 380. 
1845. 
Ipomcea hirsuticaulis C. H. Wright, Kew Bull. 162. 1896. 
Type locality: Brazil. 
Distribution: Florida Keys and West Indies, southern Mexico to 
Bolivia, Peru and Brazil. 
160. Ipomcea leucotricha J. Donnell Smith, Bot. Gaz. 23: 10. 1897. 
Perennial; densely silvery-pubescent or sericeous; leaf-blades orbicular, 6-10 
cm. broad, cordate, entire, acute, sparingly pilose above, silvery beneath; peduncles 
many-flowered, cymes 3-4 times dichotomous, corymbiform; sepals oblong-ovate, 
6 mm. long, the awned apex recurved; corolla 5-6 cm. long, canescent in bud. 
Type locality: Newton, Guatemala. 
Distribution : Guatemala. 
Specimens examined: Newton, Nelson 3512, 1895 (type — N). 
